Article
Materials Science, Multidisciplinary
Dan Wang, Fang-Xin Yin, Bei Cheng, Yang Xia, Jia-Guo Yu, Wing-Kei Ho
Summary: In this study, CeO2 hollow spheres were prepared using a template method and showed the best photocatalytic performance when annealed at 600 degrees Celsius, attributed to their large specific surface areas, high crystallization, and excellent light scattering ability. Active species trapping experiments indicated that superoxide anion and hole were the dominant contributors to tetracycline degradation.
Article
Biochemistry & Molecular Biology
Thomas Cadenbach, Valeria Sanchez, Daniela Chiquito Rios, Alexis Debut, Karla Vizuete, Maria J. Benitez
Summary: In recent years, there has been significant interest in semiconductor hollow spheres due to their unique combination of morphological, chemical, and physico-chemical properties. In this study, we successfully synthesized BiFeO3 hollow spheres for the first time using a hydrothermal treatment method, and systematically investigated the mechanism of their formation. The synthesized hollow spheres showed high catalytic activity in the photodegradation of Rhodamine B under visible-light irradiation, with complete degradation occurring in less than 150 min at neutral pH. The superior efficiencies of the synthesized material can be attributed to the unique features of hollow spheres, as confirmed by trapping experiments.
Article
Chemistry, Applied
Yang Li, Dainan Zhang, Jiajie Fan, Quanjun Xiang
Summary: The highly crystalline g-C3N4 hollow spheres prepared by the molten salt method exhibit improved photocatalytic activity, repairing structural defects, enhancing energy utilization, and increasing active sites.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Xing Zhang, Yilei He, Yanze Wei, Ranbo Yu
Summary: The study successfully prepared high-performance tungsten trioxide HoMS materials with precise control of multi-shell structures and shell thickness, exhibiting excellent photocatalytic water oxidation activity. The investigation on the effects of shell thickness on photocatalytic performance was comprehensive.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Fei Yu, Quanhua Deng, Haiping Li, Yuguo Xia, Wanguo Hou
Summary: This study proposes a universal strategy to enhance the OER activity of PCN-based photocatalysts by synthesizing single-atom metal-oxygen doped PCN through electrostatic adsorption of oxometallate anions on protonated amorphous melon. The MO structure functions as OER active centers and enhances photoexcited charge separation by introducing hole-trapping doping levels in bandgaps.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Huiming Shi, Quanquan Shi, Jinmei Li, Gao Li
Summary: Tetracycline, a widely used antibiotic, causes water pollution due to incomplete metabolism. This study explores a new photocatalyst, spherical MnCeOx solid solution, which exhibits excellent activity in tetracycline degradation. The doping of Mn cations introduces defect energy levels and increases the number of surface oxygen vacancies, promoting the separation and transfer of photogenerated electrons and holes.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ning Chen, Bin Liu, Peng Zhang, Chenrui Wang, Yanping Du, Wei Chang, Wanyu Hong
Summary: Ce-doped SnO2 hollow spheres showed higher photocatalytic activity compared to pure SnO2, with Ce doping enhancing the degradation efficiency of dyes, and the hollow structure facilitating the efficient arrival of reactant molecules.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Jiajia Long, Yuting Qian, Wenrou Tian, Najun Li, Dongyun Chen, Qingfeng Xu, Hua Li, Jianmei Lu
Summary: BiFeO3 hollow nanospheres with abundant catalytic active sites were fabricated via solvothermal method. Surface iodine-grafting was introduced to enhance charge transmission and active species generation. The iodine-grafted BiFeO3 hollow nanospheres showed a faster degradation rate of bisphenol A compared to un-grafted BiFeO3.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Leilei Wang, Haihang Cui, Lei Wang, Xu Han, Xudong Wang
Summary: The translation discusses the challenges between high performance of photocatalysis and difficulty in recycling micro/nano photocatalysts, proposing a method using visible-light photocatalysts ZnIn2S4 grafted on floating hollow glass microspheres to address this issue. By employing different pretreatment methods on the hollow glass microspheres, the structure pattern, morphology, and photocatalytic activities of the composite microspheres were altered. The study also presents the growth mechanism of the formation process of the composite microspheres, showing enhanced degradation efficiency of Rhodamine B under visible light irradiation compared to ZIS powder, indicating promising potential for efficient recycling of micro/nano photocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jie Xiong, Hong-Yan Zeng, Chao-Rong Chen, Di-Yang Peng, Sheng Xu, De-Shun An
Summary: A PANI/CuBi2O4 composite was synthesized via in-situ chemical oxidative polymerization and subsequent hydrothermal reaction. The optimized composite showed excellent Cr(VI) reduction properties under visible-light, attributed to the synergy of PANI and CuBi2O4. PANI acted as a light acceptor to generate more photo-induced electrons, while the PANI/CuBi2O4 heterostructure provided a good electric contact to improve carrier transfer and separation, ultimately enhancing the photocatalytic activity.
SURFACES AND INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Shanzhao Li, Deqing Chu, Limin Wang, Runce Rong, Ning Zhang
Summary: Hollow copper oxide spheres with a diameter of 1.5-2 μm were prepared through a one-step hydrothermal reaction at 170°C. The formation mechanism was deduced through nucleation process analysis, finding that Ostwald ripening process and NH3 from urea played a key role. The controllable morphology showed excellent photocatalytic activity in wastewater treatment.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Chemistry, Physical
Tingfei Lou, Shizhu Song, Xiaohong Gao, Wenjing Qian, Xiaolei Chen, Qi Li
Summary: Hollow carbon sphere (HCS)-supported titanium dioxide (TiO2) nanoparticles (sub-20-nm; HCS@TiO2)-based composites were designed and fabricated to improve the separation efficiency of photogenerated electron-hole pairs and enhance the adsorption performance of organic pollutants, achieving efficient photocatalytic degradation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Nannan Liu, Simin Shang, Dajun Shi, Qingrong Cheng, Zhiquan Pan
Summary: A novel hollow ZnO/Mn-ZIF-67 composite photocatalyst was synthesized using MOFs, showing higher photocatalytic activity in degrading Bismarck brown R. The improved performance was attributed to effective photogenerated charge separation and transfer through the Z-scheme heterojunction between hollow ZnO spheres and Mn-ZIF-67. The composite also exhibited good stability and recyclability, with a proposed Z-scheme electron transfer mechanism explaining its enhanced photocatalytic performance.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Sreesha Sasi, P. H. Fathima Fasna, T. K. Bindu Sharmila, C. S. Julie Chandra, Jolly Antony, Vidya Raman, Ajalesh B. Nair, Hareesh N. Ramanathan
Summary: This study describes a concise and eco-friendly method to synthesize nano zinc oxide (nZnO) particles using raw Garcinia Cambogia fruit pulp extract. The synthesized nZnO exhibits remarkable crystallinity, purity, and a hexagonal wurtzite structure. The spherical nZnO particles with an average diameter of 32.8 nm are observed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) results show that the optical bandgap of nZnO is 3.24 eV. Moreover, nZnO demonstrates excellent photocatalytic activity for dye degradation and substantial bactericidal effects against pathogenic bacteria.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Haizhao Zheng, Zhiwei Chen, Cheng Huang, Linlin Gao, Tianao Dong, Juncheng Hu
Summary: The CdS/ZIF-8 heterojunction system was successfully fabricated through a facile wet-chemically method, showing significantly enhanced interfacial charge separation and superior photocatalytic hydrogen production performance compared to pristine CdS, offering new insights for novel photocatalyst development.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
